{  Statement: http://acmp.ru/?main=task&id_task=597
   Verdict: Accepted
}
uses
    SysUtils, Math;

var
    a,b,c:longint;
    
begin
reset(input,'input.txt');
rewrite(output,'output.txt');
read(a, b, c);
if a >= b + c then write('YES') else write('NO');
end.